Problem

10. Given a square pyramid with a height of \( 21 \mathrm{ft} \) and a volume of 3969 cubic feet, find the length of one side of the square base. Round to the nearest tenth.

Answer

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Answer

\(s=\sqrt{B}\)

Steps

Step 1 ：\(V = \frac{1}{3}Bh\)

Step 2 ：\(B=\frac{3V}{h}\)

Step 3 ：\(s=\sqrt{B}\)

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